Soldier-mad Marshall Scott donned his very own uniform for a birthday treat.

His mum, Imogen Scott, was taking him to see the Changing of the Guard at Windsor Castle. 

But as he watched the soldiers from the Coldstream Guards march through the quadrangle, Marshall could never have expected what happened next...

Lance Corporal Paul Edden stepped out of the guard room and beckoned the "Junior Guardsman" to stand by his side. 

With a salute, four-year-old Marshall stood alongside Lance Corporal Edden, for a photo that is sure to be treasured forever.  

"I just remember when I was younger when I wanted a picture with a soldier and seeing Marshall in a Coldstream guards uniform just made me proud of what I do and just thought I would give him a chance to have a picture for himself for his own memories it wasn't till one of the guardsmen found the video on Instagram that I was told it was his birthday so it just made the moment even better."

- Lance Corporal Paul Edden

"We are overwhelmed by it all, and the kindness of everyone there, not just the soldier who came out to see him. He is so happy. Literally his dreams have come true."

-Imogen Scott

The whole thing was captured on video and has since been viewed more than a million times on social media. 

Now Lance Corporal Edden has given Marshall another birthday present and offered the family a tour of Windsor Castle.

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The Coldstream Guards have seen some future potential in Marshall and tweeted:

We have a spot reserved for him at the Army Foundation College Harrogate for the March 2029 intake. #FutureGuardsman #ColdstreamGuards

Watch the original video below:

MORE: 7 Things You Didn't Know About Changing The Guard